Auction #14 of China, Hong Kong, Japan and Other Asia Stamps and Postal History

Mongolia: Russian Offices, 1907 (Jan. 22), red band cover from Urga to Kalgan, franked with Russian Arms 14k. tied by Urga (1.22) c.d.s., with a second strike alongside; roughly opened at top, Fine, scarce use of a higher value stamp on a double-rate cover.
Estimate HK$ 8,000 - 10,000.